培训期间，威廉学习了高速螺旋桨飞机和直升机驾驶技术等课程。
William learnt how to fly fast propeller-powered planes and helicopters during the four-month RAF training.(See photo)
课程的螺旋式设计确保持续复习以稳固提高自然发音技能。
The spiral design of the program ensures constant review and steady build-up of the phonics skills.
课程的螺旋式设计确保持续复习以稳固提高自然发音技能。
The spiral design of the program ensures constant review and steady build-up of the phonics skills.
应用推荐